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Flying The Illyushin IL-62  
User currently offlineAmerican 767 From United States of America, joined May 1999, 3761 posts, RR: 12
Posted (11 years 6 months 4 weeks 12 hours ago) and read 4993 times:
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Any IL-62 pilot around here? Or is there anyone among the nearly 10000 airliner.net members who has flown the IL-62 before? I would be curious to hear one's impressions about flying this aircraft. I have never flown on it.

I read in Airways an article about flying the IL-86. It was the description from a pilot's view of a domestic flight within Russia and the author was comparing what it was like to fly an IL-86 versus an IL-62. I coudn't beleive what he said. He said that the IL-86 controls had hydraulics input as the IL-62 didn't. I have always believed that all large aircrafts had hydraulics input in their flight control systems. Do you beleive that the IL-62 controls are not actuated by hydraulic systems? You have to apply just muscle power to handle the controls of this jet! That's the most unbelievable thing about airliners I have ever read.
The other thing about the IL-62 characteristics is the thrust reverser system. Out of the four rear mounted jet engines, there are I beleive only two thrust reversers installed, those are installed on the two outboard engines. I'm not too sure about that one but I remember reading that somewhere.
I read three or four years ago on Airliners another article about the IL-62. The author was simply a passenger taking a flight on that aircraft, he was explaining that one feels the aircraft has barely enough power to get airborne. So imagine if just after V1, the aircraft experiences one engine fire and the pilot has to shut down the malfunctioning engine!

I think it's interesting to look closely how engineers have designed this aircraft.


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Ben Soriano
10 replies: All unread, jump to last
 
User currently offline747Teach From United States of America, joined Nov 2000, 176 posts, RR: 1
Reply 1, posted (11 years 6 months 4 weeks 7 hours ago) and read 4884 times:

American 767: The author is correct. All flying controls on the IL-62 are manually operated through servo tabs. There is a 3000 psi hydraulic system for gear retraction, and it also operates the nose wheel steering, brakes, spoilers, and windscreen wipers. Other interesting notes: The original design from 1963 included a 5-man cockpit (2 pilots, navigator, radio operator, and flight engineer), tail parachute to aid braking, and a twin-wheel strut that extended downard to support the aft fuselage during loading and unloading. This from my 1973 Jane's Aircraft, page 472. Regards,

User currently offlineAmir From Syria, joined Dec 1999, 1254 posts, RR: 12
Reply 2, posted (11 years 6 months 4 weeks 2 hours ago) and read 4862 times:

Hi Ben,

i did conduct about 25 flights with the IL-62 in the years between 1973-1987.
I can't confirm the technical aspects about having hydraulics or not. One thing i can confirm. This plane is for sure not underpowered! if you sit in Coach in the last third of the plane and at take off you will realize what flying means! but like many 4 enguined planes the take off angle is not very steep. Compare it with the 707. And the 707 is also not underpowered.
Also compare the thrust of the engines (about 12 Tons/IL62) this is not low for an aircraft of about 150 Tons MTOW.

If you have a chance to fly this bird, get yourself the last row in Coach, you will love it!

Brgds
Amir


User currently offlineBuckfifty From Canada, joined Oct 2001, 1316 posts, RR: 20
Reply 3, posted (11 years 6 months 4 weeks 1 hour ago) and read 4847 times:

Just to add another bit, the thrust reversers are on the outboard engines only, just like the VC10. And if I'm not mistaken, they're of the cascading vane type.

User currently offlineVc10 From United Kingdom, joined Nov 2001, 1407 posts, RR: 16
Reply 4, posted (11 years 6 months 3 weeks 6 days 20 hours ago) and read 4818 times:

the Boeing 707 [similar size aircraft ] also had manual controls, with eventually hydraulic boost on the rudder. Yes I can confirm that the VC-10 only had reversers on the two outboard engines, although originally the super VC-19 had reversers on all four engines. Perhaps the old Russian iron duck was doing a graduated power T/Off so that was why its performance was something less than sparkling.
Regards little vc10


User currently offlineIlyushin96M From United States of America, joined Sep 1999, 2609 posts, RR: 12
Reply 5, posted (11 years 6 months 3 weeks 6 days 19 hours ago) and read 4810 times:

I read that same article, about flying the IL-62. I found it very interesting and informative. The pilots even let the author steer the aircraft a bit; he commented the controls felt quite sluggish, like driving a big bus. I believe manual controls were standard for all of the early jets, with hydraulic boost only for certain things, like the rudder? I'm not sure.

While the prototype aircraft had a parachute to slow it on landing, the original production IL-62 had Kuznetsov turbofans, which have cascade-type thrust reversers. The IL-62M has Soloviev D30KUs with clamshell-type reversers. Both types use the outter engines only for reverse thrust, on the ground and in-flight as well, to slow the aircraft during descent. Let me tell you, it is quite an odd sensation to be seated in the IL-62 cabin on descent, hear the engines' high-pitched shriek, and feel the aircraft slow as a result of reverse thrust application! As for engine thrust and power on take-off, I flew aboard an Aeroflot IL-62M in 1993 on SFO-ANC-SVO, and take-off was actually quite steep - like a 757 at full thrust. On the ground, all IL-62s have the "tail wheel" to keep the aircraft level during loading. With its rear-mounted engines and huge T tail, it is quite heavy towards the rear.

My IL-62M flight was one of the most interesting I have ever taken; it was something else to be on a '60s era jet for 10 + hours!


User currently offlineLZ-TLT From Germany, joined Apr 2001, 431 posts, RR: 0
Reply 6, posted (11 years 6 months 3 weeks 6 days 5 hours ago) and read 4743 times:

Amir,

Could you please post more infos about the Il-62 Center Of Gravity trimming system? I have read somewhere that the Il-62 has a dedicated system of water tanks, lines and pumps used only to trim the aircraft's CoG, however I was never able to find any additional infos(tank locationgs and capacity, details on operating the system and so on). Was this system also controlled by the pilot or by the flight engineer? Was it possible to shift the CoG inflight or only on the ground?

Would be nice to hear more on it.

-LZ


User currently offlineAmir From Syria, joined Dec 1999, 1254 posts, RR: 12
Reply 7, posted (11 years 6 months 3 weeks 6 days 3 hours ago) and read 4729 times:

Hi Lz,

I'm sorry to disappoint you but i can't comment on this trim topic, though i love this bird and even though i conducted weight and balance practice some ten years ago (A310-300, A300-600. DC8-73), i don't know about it. It would be mega interesting to learn about such water system! if aim not mistaken Airbus started an efficient System with the A310-300 by introducing pumps that shift fuel between wings and stabilizers. The onboard computer system will shift fuel automatically during flight as to adjust the CoG to be more ideal. I'm not sure if Airbus was the first to introduce this system at around (my assumption) 1983, some 20 years after the design of the IL-62.
what i know is that Interflug for example used to have problems when flying short range with low loads on the IL-62, for instance they used to fly from Damascus via Larnaca (LCA) to Berlin (SXF) and on many cases we were seated in the front part of the plane for trim reasons. Consider the short flight time (40 minutes) and the MLDW (max. Landing weight).
Like the TU-154, they always try to place the luggage in the front compartments to counter balance the heavy T-Tail. The only thing that i doubt is if such system is efficient on the IL-62 where the wings are so damn close to the T-Tail and the range of changing a Trim would be so damn narrow. At the A310-300 for instance the DOI (Dry Operating Index) is at about 21 Percent this means roughly the the center of Gravity at zero load and Fuel (incl. Crew and their luggage) is damn in the front (in the third part), so by shifting fuel to the Aft you have a good range to influence the Trim.


rgds
Amir


User currently offlineVc10 From United Kingdom, joined Nov 2001, 1407 posts, RR: 16
Reply 8, posted (11 years 6 months 3 weeks 5 days 17 hours ago) and read 4686 times:

Amir,
I also heard about the IL-62 water trim system, from when the aircraft used to operate into LHR. The story goes that it would operate into LHR with water ballast , but did not need it to operate out [reason unknown ]. This meant that the water had to off loaded, but the Russians had put anti- freeze in it for the flight, so the disposal of this contaminated water was not a simply task.
Fuel trimming in flight was used long before Airbus, as the super VC-10 fin [vertical stabilizer ] contained fuel and the quantity could be altered [reduced ] in flight by the Flight Engineer to keep the the aircraft trimmed. Then there was the mother of all fuel trimmers the Concorde, and probably there were aircraft prior to this . Very little is new in aviation these days  Smile except in electronics.

regards little vc10


User currently offlineAmir From Syria, joined Dec 1999, 1254 posts, RR: 12
Reply 9, posted (11 years 6 months 3 weeks 5 days 2 hours ago) and read 4633 times:

Hi Vc10

cann you tell where the water balast was placed? was it basically a load in the under compartments?

Thanks & Brgds
Amir


User currently offlineVc10 From United Kingdom, joined Nov 2001, 1407 posts, RR: 16
Reply 10, posted (11 years 6 months 3 weeks 4 days 18 hours ago) and read 4639 times:

Amir,
Sorry I am no expert on the IL-62, and was told the story by the LHR fire services, who were asked to take the water off. I should imagine it was a tank in the forward belly area.
When I was on VC-10 we landed at Delhi and managed to get a visit on an IL-62 that was also parked there, and although it seemed a nice enough aircraft the flight deck looked very old fashioned compared to VC-10.All the instruements and switches were all so large. Mind you as I have got older wouldn't mind that so much now.

Regards little vc10


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